Title (en)

Ferritic stainless steel exhibiting excellent atmospheric corrosion resistance and crevice corrosion resistance.

Title (de)

Ferritischer, rostfreier Stahl mit guter Wetterbeständigkeit und gutem Spaltkorrosionswiederstand.

Title (fr)

Acier inoxydable ferritique présentant une excellente résistance à la corrosion atmosphérique et à la corrosion par fissuration.

Publication

EP 0625584 A1 19941123 (EN)

Application

EP 94107790 A 19940519

Priority

JP 11740193 A 19930519

Abstract (en)

A ferritic stainless steel exhibiting excellent atmospheric corrosion resistance and crevice corrosion resistance can be provided by positively adding P thereto and by adequately adjusting Ca and Al. The ferritic stainless steel according to the present invention essentially consists of, in weight percentages, C : about 0.05 % or less Si : about 1.0 % or less Cr : about 11 % or more and less than about 20 % Mn : about 1.0 % or less N : about 0.10 % or less S : about 0.03 % or less Ca : about 5 ppm or more and about 50 ppm or less Al : about 0.5 % or less P : more than about 0.04 % and about 0.20 % or less and the balance being iron and incidental impurities. The stainless steel according to the present invention may also contain at least one element selected from a group (1) consisting of about 6% or less of Mo, group (2) consisting of about 1.0 % or less of Cu, about 3% or less of Ni and about 3 % or less of Co, or group (3) consisting of about 1.0 % or less of Ti, about 1.0 % or less of Nb, about 1.0 % or less of V, about 1.0 % or less of W, about 1.0 % or less of Zr, about 1.0 % or less of Ta and about 0.05 % or less of B. <IMAGE>

IPC 1-7

C22C 38/18; C22C 38/20; C22C 38/22; C22C 38/24; C22C 38/26; C22C 38/28; C22C 38/30; C22C 38/32

IPC 8 full level

C22C 38/18 (2006.01)

CPC (source: EP US)

C22C 38/18 (2013.01 - EP US)

Citation (search report)

• [Y] US 4824635 A 19890425 - HOSHINO KAZUO [JP], et al
• [Y] EP 0130220 A1 19850109 - NISSHIN STEEL CO LTD [JP]
• [Y] US 4465525 A 19840814 - YOSHIMURA HIROFUMI [JP], et al
• [Y] EP 0050356 A1 19820428 - NIPPON STEEL CORP [JP]
• [PA] EP 0570985 A1 19931124 - KAWASAKI STEEL CO [JP]
• [A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 156 (C - 351) 5 June 1986 (1986-06-05)
• [A] PATENT ABSTRACTS OF JAPAN vol. 10, no. 123 (C - 344) 8 May 1986 (1986-05-08)
• [A] PATENT ABSTRACTS OF JAPAN vol. 17, no. 247 (C - 1059) 18 May 1993 (1993-05-18)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0625584 A1 19941123; EP 0625584 B1 19971029; CA 2123470 A1 19941120; CA 2123470 C 20010703; CN 1041756 C 19990120; CN 1104686 A 19950705; DE 69406490 D1 19971204; DE 69406490 T2 19980226; KR 100255227 B1 20000501; TW 272236 B 19960311; US 5413754 A 19950509

DOCDB simple family (application)

EP 94107790 A 19940519; CA 2123470 A 19940512; CN 94105526 A 19940519; DE 69406490 T 19940519; KR 19940010886 A 19940519; TW 83104341 A 19940513; US 24218194 A 19940513